ABAP Select data from SAP table P1782 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P1782 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to P1782. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the P1782 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_P1782 TYPE STANDARD TABLE OF P1782,
      WA_P1782 TYPE P1782,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <P1782> TYPE P1782.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P1782.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P1782
  INTO TABLE IT_P1782.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P1782
*  INTO TABLE @DATA(IT_P17822).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_P1782 INDEX 1 INTO DATA(WA_P17822).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P1782 ASSIGNING <P1782>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P1782>-MANDT = 1.
<P1782>-PLVAR = 1.
<P1782>-OTYPE = 1.
<P1782>-OBJID = 1.
<P1782>-INFTY = 1.

ENDLOOP.

LOOP AT IT_P1782 INTO WA_P1782.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P1782-SUBTY, sy-vline,
  WA_P1782-ISTAT, sy-vline,
  WA_P1782-PRIOX, sy-vline,
  WA_P1782-BEGDA, sy-vline,
  WA_P1782-ENDDA, sy-vline,
  WA_P1782-VARYF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P1782 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_P1782 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_P1782 INTO WA_P1782.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_P1782_STR, 
MANDT TYPE STRING,
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ISTAT TYPE STRING,
PRIOX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
VARYF TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
REASN TYPE STRING,
HISTO TYPE STRING,
ITXNR TYPE STRING,
RESID_CAT TYPE STRING,
DOM_COUNTRY TYPE STRING,
DOM_COUNTY TYPE STRING,
DOM_COUNC TYPE STRING,
INSTHE TYPE STRING,
SCHOOL TYPE STRING,
YRLLINST TYPE STRING,
LEA TYPE STRING,
FEE_PAYER_CODE TYPE STRING,
SOCIO_EC_CLASS TYPE STRING,
UCAS_NO TYPE STRING,
HUSID TYPE STRING,
TREFNO TYPE STRING,
DHREGREF TYPE STRING,
QUALENT2 TYPE STRING,
FEEELIG TYPE STRING,
SPCSTU TYPE STRING,
TTACOM TYPE STRING,
SCHOOL_NO TYPE STRING,
SABAT TYPE STRING,
ENTRYCDE TYPE STRING,
TTCID TYPE STRING,
NHSEMP TYPE STRING,
PGCESBJ1 TYPE STRING,
PGCESBJ2 TYPE STRING,
PGCESBJ3 TYPE STRING,
PGCECLSS TYPE STRING,
PREVINST TYPE STRING,
EMPLOYER TYPE STRING,
FEINSTID TYPE STRING,
DHREGREF2 TYPE STRING,
PARED TYPE STRING,
POSTCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P1782_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_P1782_STR-MANDT sy-vline 
WA_P1782_STR-PLVAR sy-vline 
WA_P1782_STR-OTYPE sy-vline 
WA_P1782_STR-OBJID sy-vline 
WA_P1782_STR-INFTY sy-vline 
WA_P1782_STR-SUBTY sy-vline 
WA_P1782_STR-ISTAT sy-vline 
WA_P1782_STR-PRIOX sy-vline 
WA_P1782_STR-BEGDA sy-vline 
WA_P1782_STR-ENDDA sy-vline 
WA_P1782_STR-VARYF sy-vline 
WA_P1782_STR-SEQNR sy-vline 
WA_P1782_STR-AEDTM sy-vline 
WA_P1782_STR-UNAME sy-vline 
WA_P1782_STR-REASN sy-vline 
WA_P1782_STR-HISTO sy-vline 
WA_P1782_STR-ITXNR sy-vline 
WA_P1782_STR-RESID_CAT sy-vline 
WA_P1782_STR-DOM_COUNTRY sy-vline 
WA_P1782_STR-DOM_COUNTY sy-vline 
WA_P1782_STR-DOM_COUNC sy-vline 
WA_P1782_STR-INSTHE sy-vline 
WA_P1782_STR-SCHOOL sy-vline 
WA_P1782_STR-YRLLINST sy-vline 
WA_P1782_STR-LEA sy-vline 
WA_P1782_STR-FEE_PAYER_CODE sy-vline 
WA_P1782_STR-SOCIO_EC_CLASS sy-vline 
WA_P1782_STR-UCAS_NO sy-vline 
WA_P1782_STR-HUSID sy-vline 
WA_P1782_STR-TREFNO sy-vline 
WA_P1782_STR-DHREGREF sy-vline 
WA_P1782_STR-QUALENT2 sy-vline 
WA_P1782_STR-FEEELIG sy-vline 
WA_P1782_STR-SPCSTU sy-vline 
WA_P1782_STR-TTACOM sy-vline 
WA_P1782_STR-SCHOOL_NO sy-vline 
WA_P1782_STR-SABAT sy-vline 
WA_P1782_STR-ENTRYCDE sy-vline 
WA_P1782_STR-TTCID sy-vline 
WA_P1782_STR-NHSEMP sy-vline 
WA_P1782_STR-PGCESBJ1 sy-vline 
WA_P1782_STR-PGCESBJ2 sy-vline 
WA_P1782_STR-PGCESBJ3 sy-vline 
WA_P1782_STR-PGCECLSS sy-vline 
WA_P1782_STR-PREVINST sy-vline 
WA_P1782_STR-EMPLOYER sy-vline 
WA_P1782_STR-FEINSTID sy-vline 
WA_P1782_STR-DHREGREF2 sy-vline 
WA_P1782_STR-PARED sy-vline 
WA_P1782_STR-POSTCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.